scholarly journals Measurement of initial-state–final-state radiation interference in the processese+e−→μ+μ−γande+e−→π+π−γ

2015 ◽  
Vol 92 (7) ◽  
Author(s):  
J. P. Lees ◽  
V. Poireau ◽  
V. Tisserand ◽  
E. Grauges ◽  
A. Palano ◽  
...  
Keyword(s):  
Initial State ◽  
Final State ◽  
Final State Radiation ◽  
State Radiation

scholarly journals Study of final-state radiation in decays ofZbosons produced inppcollisions at 7 TeV

2015 ◽  
Vol 91 (9) ◽  
Author(s):  
V. Khachatryan ◽  
A. M. Sirunyan ◽  
A. Tumasyan ◽  
W. Adam ◽  
T. Bergauer ◽  
...  
Keyword(s):  
Final State ◽  
Final State Radiation ◽  
State Radiation

scholarly journals Local analytic sector subtraction for final state radiation at NNLO

2019 ◽  
Author(s):  
Sandro Uccirati ◽  
Lorenzo Magnea ◽  
Ezio Maina ◽  
Giovanni Pelliccioli ◽  
Chiara Signorile-Signorile ◽  
...  
Keyword(s):  
Final State ◽  
Final State Radiation ◽  
State Radiation

scholarly journals Sensitivity of future linear $$\hbox {e}^+\hbox {e}^-$$ colliders to processes of dark matter production with light mediator exchange

2021 ◽  
Vol 81 (10) ◽  
Author(s):  
Jan Kalinowski ◽  
Wojciech Kotlarski ◽  
Krzysztof Mȩkała ◽  
Paweł Sopicki ◽  
Aleksander Filip Żarnecki
Keyword(s):  
Dark Matter ◽  
Linear Collider ◽  
Production Cross ◽  
Photon Emission ◽  
International Linear Collider ◽  
High Energy ◽  
Initial State ◽  
Final State ◽  
State Radiation ◽  
Wide Range

AbstractAs any $$e^+e^-$$ e + e - scattering process can be accompanied by a hard photon emission from the initial state radiation, the analysis of the energy spectrum and angular distributions of those photons can be used to search for hard processes with an invisible final state. Thus high energy $$e^+e^-$$ e + e - colliders offer a unique possibility for the most general search of dark matter (DM) based on the mono-photon signature. We consider production of DM particles at the International Linear Collider (ILC) and Compact Linear Collider (CLIC) experiments via a light mediator exchange. Detector effects are taken into account within the Delphes fast simulation framework. Limits on the light DM production in a simplified model are set as a function of the mediator mass and width based on the expected two-dimensional distributions of the reconstructed mono-photon events. The experimental sensitivity is extracted in terms of the DM production cross section. Limits on the mediator couplings are then presented for a wide range of mediator masses and widths. For light mediators, for masses up to the centre-of-mass energy of the collider, coupling limits derived from the mono-photon analysis are more stringent than those expected from direct resonance searches in decay channels to SM particles.

scholarly journals Latest studies on the reaction e+e− → K+K−γ

2018 ◽  
Vol 166 ◽  
pp. 00018 ◽  
Author(s):  
Leonard Leśniak ◽  
Michał Silarski
Keyword(s):  
Reaction Mechanisms ◽  
Initial State Radiation ◽  
Main Reaction ◽  
Theoretical Studies ◽  
Initial State ◽  
Final State ◽  
Mass Distributions ◽  
Radiative Processes ◽  
Pseudoscalar Mesons ◽  
State Radiation

Recent theoretical studies of the e+e- → K+K-γ process are described. Three main reaction mechanisms are considered: the initial state radiation, the final state radiation and the strong interaction between the outgoing K+K- mesons. The K+K- effective mass distributions are derived for three different models which in past have been used for a description of the e+e- → π+π-η data. Also the numerical results for the angular photon and kaon distributions are presented. A new model of the e+e- → M1M2γ reactions is outlined which can serve for multichannel analyses of the radiative processes with a production of two pseudoscalar mesons M1 and M2.

scholarly journals Final-state radiation and line-shape distortion in resonance pair production

1998 ◽  
Vol 435 (1-2) ◽  
pp. 233-239 ◽  
Author(s):  
W. Beenakker ◽  
F.A. Berends ◽  
A.P. Chapovsky
Keyword(s):  
Pair Production ◽  
Line Shape ◽  
Shape Distortion ◽  
Final State ◽  
Final State Radiation ◽  
State Radiation

scholarly journals Coherence phenomena between initial and final state radiation in a dense QCD medium

2013 ◽  
Vol 2013 (12) ◽  
Author(s):  
Néstor Armesto ◽  
Hao Ma ◽  
Mauricio Martínez ◽  
Yacine Mehtar-Tani ◽  
Carlos A. Salgado
Keyword(s):  
Final State ◽  
Final State Radiation ◽  
State Radiation

scholarly journals Interference effects between the initial and final state radiation in a QCD medium

2013 ◽  
Vol 446 ◽  
pp. 012010
Author(s):  
Nestor Armesto ◽  
Hao Ma ◽  
Mauricio Martinez ◽  
Yacine Mehtar-Tani ◽  
Carlos A Salgado
Keyword(s):  
Interference Effects ◽  
Final State ◽  
Final State Radiation ◽  
State Radiation

scholarly journals TMD fragmentation functions at N3LO

2021 ◽  
Vol 2021 (7) ◽  
Author(s):  
Markus A. Ebert ◽  
Bernhard Mistlberger ◽  
Gherardo Vita
Keyword(s):  
Cross Section ◽  
Production Cross ◽  
Leading Order ◽  
Final State ◽  
Transverse Momentum Dependent ◽  
Final State Radiation ◽  
State Radiation ◽  
Fragmentation Functions ◽  
Initial States ◽  
Independent Calculation

Abstract We compute the unpolarized quark and gluon transverse-momentum dependent fragmentation functions (TMDFFs) at next-to-next-to-next-to-leading order (N3LO) in perturbative QCD. The calculation is based on a relation between the TMDFF and the limit of the semi-inclusive deep inelastic scattering cross section where all final-state radiation becomes collinear to the detected hadron. The required cross section is obtained by analytically continuing our recent computation of the Drell-Yan and Higgs boson production cross section at N3LO expanded around the limit of all final-state radiation becoming collinear to one of the initial states. Our results agree with a recent independent calculation by Luo et al.

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